This product works great! It didn't take long at all to have day long results (a month or two). After about a year the crease is permanent and I don't have to wear the tapes anymore.
I have what they list as 'Occidental' eyelids, I only wore the tapes on one side to get it to match the other.
It takes some patience, but if you keep wearing them, the time your crease holds gets longer and longer.
They give you a lot of support too; making sure you are using it properly, checking in for updates on progress ect.
Honestly a great product, would definitely recommend!